Quote:
Originally Posted by MichaelInChicago
I just changed the stock plugs to NGK Iridiums in my wife's X1 and the difference is night and day.
I will be changing them in my GC this week.
|
Can you describe what the difference is? Considering it's an X1, it's not a high-performance vehicle so I'm interested to see what kind of difference was noticeable. What about everyone's experience in the 6 series with upgraded plugs vs. OEM?